Automatic pump



meer@ any 2c, 192e.

y l wasn- Enrr orsi-cs. I

EDWARD YEOHANSQF CHICAGO, ILLINOIS, ASSIGNOR TO YEOMANS BROTHERS (20M-`Pm, OF CHICAGO, ILLINOIS, A COBPORATION 0F DELAWARE.

Aurora/amc PUMP.

.eppucaaen mea september 192s. Serna m. 681,730.

To all 'whom t may conccm.'

Be it known that I, EDWARD YnoMANs, a citizen of the United States, anda resident of Chicago, county of Cook, 'and State of Illinois, haveinvented certain new and useful Improvements in Automatic Pumps, ofwhich the following is a specification.

The invention relates to pumps and more particularly to sewage pumpswhich are automatically thrown into and out of operation, and seeks toprovide improved means which are automatically thrown into andot ofoperation with the pump for supplying lubricant when the pump isactuated. 'The -invention consists in features of improve menthereinafter set forth, illustrated in a preferred form in theaccompanying drawing, and more particularly pointed out in the appendedclaims. y

Figure '1 is an elevation of a system embodying the present invention.Figs. 2 and 3 are detail views of parts of the apparatus.

The particular system illustrated Ais adapted for ejecting liquidsewage? from a receptacle or well 1 in which it collects. A centrifugalpump 2 having a vertical axis is arranged adjacent the lower end of thereceptacle or well 1 and preferabl in the pit 3. The pump is shownmounte upon a suitable base 4 and its suction or intake pipe 5communicates with the bottom of there-.-

ceptacle or well 1. When the pump is in operation liquid is drawn fromthe receptacle 1 and is forced through an upleading discharge pipe 6. Avertical pump shaft is mounted in suitable bearings 8 and its upper endis connected to the rotor of an electric motor 9 mounted at Vthe upperend of the pit.

A series of lpi 10 extendin downwardly into the p1t supply oil to t eshaft bearings and also, ifv desired, to the bearings of the centrifugalpump. These pipes are connected at their upper ends to a common supplypipe 11 which leads from a tank or oil reservoir 12, a valve 13 'beingprovided the pipe 11 for establishing or cutting ofi' communicationbetween the tank 12 and the individual supply pipes 10.

The valve 13 is operated by an electromagnet or, preferably, by asolenoid 14 arranged immediatel above the valve. Prefera'bly, as shown,t e stem 15 of the valve is connected at its upper end to the lower endof a U-shaped member or yoke 16, and a closed by means of a float switch21.

vcuit of the motor 9.

ductors 32 is connected parallel to t pin l17 extends through vertical.slots 18 in the sides of the yoke and through the lower end of anextension 19 onthe solenoid core 20. When the solenoid is deenergized,the weightofits core is s`uiiicient to close the valve 13. When themagnet is'cnergized, it opens the valve. The lost-motion connectionbetween the valve stem and solenoid core permits the initial movement ofthe latter in opening and closing the -valve before the valve itself isshifted.

The circuits of the electric motor 9 and the electro-magnet or solenoid14 are automatically and simultaneously opened arIid the form shown,this switch is pivoted and co-operates with a ixed contact 22, theswitch being held in.either open or closed position by an'ovev-the-center spring 23. A float 24 within the receptacle or well 1 ispreferably arranged within a pipe 25 and has an upwardly extending rod26. The latter at its upper end is provided with adjustable buttons 27which, at the upper .and lower limits of the level of the liquid in thewell,are arranged to engage and close and open the switch 21.

In addition to closing and opening the circuits of the electro-magnet14, the switch 21 may also directly ofn and close the cirreferably,however, the switch controls the motor circuit through the 'medium of anelectro-magnet switch comprising stationary contacts 28 and 29 and amovable contact 30 operated by a solenoid magnet 31. One of the sup lycon- Ihe solenoid magnets 14 and 31 and to one of the terminals of themotor. The other terminals of the magnets are connected to the movableswitch member 21 and the other terminal of the motor to the lstationaryconv tact 28. Thev other supply conductor 33 is4 vconnectedto thelswitch contacts 22 and 29.

When liquid in the receptacle 1 reaches '100 the hi-gh'level, the oatswitch 21 is closed, thereby starting the motor 9 4and pump 2 todischarge llquid through the pipe 6, and

also opening the valve 13 to supply lubricant to the .pump

shaft bearings. yAt the low level the switch is opened, stopping the Inaddition e 11, the oil suply provided vwith motor and closing the valve.to theQ common supply pi ply p1 es 10 are prefera indivi, ual valves 34.Each valve casing, as y shown inFig. 3, has a needle valve which isspring-pressed towards its sea-t but is normally held open by means of acam lever 36 which co-o crates with a collar 37 adjustabl threa ed totheupper' portion of the va ve casing. By adjusting the collar- 37 'theextent or the opening of the needle valve can be regulated to deliverthe desired amount of oil and by means of the cam lever the valve can beopened and closed. Preferably, as shown, these valves are provided withsight openings 38.

Obviously, changes may be made in the details set forth withoutdeparture from the essentials of the invention as defined in the claims.

I claim as my invention:

1. The combination of a pump, an electric motor connected to the pumpshaft, an electrically operated valve controlling the flow of lubricantlto the pump shaft bearings, a loatsactuated switch and means controlledthereby for automatically starting and stopping the motor and openingandclosing said valve, substantially as described.

2. The combination with an electric mo'- tor, of a pump operatedthereby, a valve controlling the flow. f lubricant to the pump Shaftbearings, an electro-magnet for opening and closing said valve, and afloatactuated switch for automatically closing and opening the circuitsof said motor and said magnet, substantially as described.'

3. The combination with a receptacle, of a pump for withdrawing liquidfrom said receptacle, an electric motor connected to the pump shaft,avalve controlling the flow of lubricant to the pum shaft bearings, a

solenoid for opening an closing said valve, a float 1n said receptacleand means controlled by said float for automatically closing and openingthe circuits of said motor i of said shaft, a series of pipes forsupplying f lubricant to the pump shaft bearings, a valve controllingthe supply of lubricant to said pipes, an electro-magnet for opening andclosing said valves land a float-actuated switchA controlled by theliquid in said receptacle for automatically closing and opening thecircuits of said motor and said magnet', substantially as described.l

5. The combination of a centrifugal pump having a vertical shaft, anelectric motor connected to the upper end of said shaft, a series ofpipes having individual controlling valves for supplying lubricant tothe pump shaft bearings, acommon valve controlling the supply oflubricant to said individual valves, a solenoid for opening Iand closingsaid common valve, and means for automatically opening and closing thecircuits of said motor and said solenoid, substantially as described.

6. rlhe combination with an electric motor, of a pump operated thereby,a valve for supplying lubricant to the pump, a lsolenoid provided with acore having a lost-motion connection with said valve for opening andclosing the same, and means for automatically opening and closing thecircuits of said motor and said magnet, substantially as described.

EDWARD YEOMANS.

